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元素守恒是指在化学反应前后,元素种类和元素质量不变。根据这一结论,可以巧妙解答一些复杂的化学计算题。例1有一种含CaCO3和CaO的混合物,测得其中钙元素的质量分数为50%。取该混合
Elemental conservation means that the type of element and the quality of the element remain unchanged before and after the chemical reaction. According to this conclusion, some complex chemical calculation problems can be solved ingeniously. Example 1 had a mixture containing CaCO3 and CaO, and the mass fraction of calcium was measured as 50%. Take this mix